Guiding arrangement for the propeller current of ships



April 13,1926. 1,580,486

' H. HASS GUIDING ARRANGEMENT FOR THE PROPELLER CURRENT 0F SHIPS F i1ed Oct. 3, 1923 2 Sheets-Shut 1 5 9-1 Fig.6. Fig.5.

Fig.2. Fig.3. My!

April 13 ,1926.

r I H. HAs's I GUIDING ARRANGEMENT FOR THE PRCPEL LBR CURRENT OF SHIPS Filed Oct. 5, 1923 2 Sheets-Shoot 2 .To all whom a ma, awn.-

of the German Republic, residing Patented 119 26.

,. NI ED STA TES -'PAr-EN ToFF1c HANS BASS, or isnnennonr, NEAR HAMBURG, GERMAiIY;

comma anmennnn'rron rim rnornnmn' curmnur or snrrs.

, Apphcati on flled ember s, iszafser m K016636305.

aIcitizen' atBerge dorf, near Hamburg, Germany, have invented certain new and useful Improve- Be it known that-I, HANS HAss,

ments in a Guiding Arrangement for the 1,500,073 been proposed to give .Propeller Current of Ships,

the water flowing deflected in a direction opposite the revolving direction of the propeller in order to inscrew ship is, illustrated on the accompanying drawing,

V "the s ips hull on Fi 7 showing liowev en a somewhat modiare arran ed bracket or shaft ing portion and a web portion integral with '18, in I the bearing portion portion are arranged ,crease in this manner the degree of eiiiciency of the propeller.

h This invention consists in transferring that idea to multiple-propeller ships and it relates toa special-construction of the bull proximatelyperpendicular to the inclined hull of the ship ,or in other words the web portions extend obliquely outwardly and downwardly as indicated in the drawing. The upper surface of the web portionis bulged upwardly 'and arranged out of the common main plane of the web portion as shown at 2. This curved deflecting surface is'inclined to the horizontal ,central plane through the propeller axis with the rear edge turned in the direction opposite to the movement of the 'propeller'in order to exert the desired guiding action on the water and the course of the direction of t e water being indicat'edbydirectional lines i'and 5 in Figs. 2' and Inthe form of construction shown in Fig. 4 the arm shows a In order to strong curvature a smooth flowingl o o the water and tojensure the desire strong specially pronounced curvature. ensure notwithstanding this or of several parts. oflthe same forthis purdeflection of the same w thout disturbing invention to a twinby way of example wherein Fig. 1 is a transverse section through. a ships hull along one of the last frames direetlybehind the'propeller in viewing the port side of the ship.

Fig. 2 is an oblique P The applicationofthe section through the 'ships hull on line II-II of Fig. 1, the propeller being shown in a slightly different position. Fi .3 is a longitudinal section through.

line III- II of Fig-2. Fig. i is a-similar; view as Fig.3 showing however asomewhat modified construction.

Fig.5 is a similar view as Fig. 3 showing however another modified construction. Fig. 6 is a transverse section similar to- Fig. l'but showing a modified construction:

Fig. 7 is a sectionon 11118 Fig. 6.

' Fig.

VIII -VIII of 8 is a section similar tothat shown in fie construction. p V

.Accordlng to the invention each stern housmg 1 co ns1sts of a bearthe adjacent plate coveri g the hull of the vessel; The web portion and thebearing in the same. plane aprounding of the stern formation of eddies, for instance at the point 7 slits 8- are provided which extend from the pressure side to the suction side.

In the form of construction shown in Fig. 5 several deflecting surfaces are arranged the one behind the other, a stern bracket of theshaft with 'obli ue. arm 9 and at a short distance from t e same a second oblique arm- 10 extending between thesurface of the hull and the shaft bean ing, the web portion of the bracket 11 surthe shaft merging into this arm' 10. to Figs. 6 and? the arni .14 bracket of the shaft and the portion' of the bracket surrounding the shaft are constructed as above described, but a correspondingly curved guiding surface 16 isbesides arranged u on the other side of the propeller shaft an fitted on the web portion of the. sternbracket of the shaft in order to assist the effect of the curved web portion of said stern: bracket.

In the form ..of construction. shown in Fig. 8 several additional guiding surfaces at the side of the stern bracket of the s aft having an oblique arm 17 and a correspondingly extending web portion the form of construction shown by According pass it properly against the propleller blades,

6 of the sternbracket of the shaft 7 way of example for instance, two guiding 19 and 20. These additional guiding' surfaces may extend over the entire dr- In some cases a shorter length, as shown on the drawing, will however be sufficient.

Instead of two additional guiding surfaces a greater number of additional guiding surfaces may be arranged, if it should be necessary.

The special construction of the stern bracket of the shaft and of the web portion surrounding the shaft as described and shown and the arrangement of the guiding surfaces may. be conveniently used in any ship with any number of shafts.

I claim 1. An arrangement for guidingthe propeller current of multiple-propeller ships, comprising a shaft housing uninterruptedly integral with the adjacent plates of the hull of the ship and including a bearing portion and a web portion, and curved surfaces on the said web portion with the rear end turned in the direction'opposed to the direction of the movement of the propeller blade J, substantially as and for the purpose set forth.

2. An arrangement for guiding the propeller current of multiple-propellerships, comprising a shaft housing uninterruptedl integral with the adjacent plates of the hull of the ship and including a bearing portion and web portion arranged in the same general plane, curved surfaces on'the said web portion with the rear end turned in the direction opposed to thedirection of the movement of the propeller blades, and additional elongated guiding surfaces integral with the bearing portion of the said housing and curved to correspond to the said web faces, substantially as and for the purpose set forth.

3. An arrangement as claimed in claim 1, wherein slots are provided in the said web portion, substantially as and for the purpose set forth.

'4. An arrangement as claimed in claim 1, wherein a plurality of elongated guiding surfaces are provided on the shaft housing.

In testimony whereof I aflix my signature.

HANS HASS. 

